billyt Posted February 10, 2022 Report Share Posted February 10, 2022 (edited) Jonnyc21. My bad I should have said ECU not CDI. The Montesa does have a standard AC alternator (USA verbiage vs UK verbiage) . It also has an AC "pulser" (see attached Montesa schematic) or trigger coil beside the alternator. While the alternator is making AC voltage the pulser AC coil (trigger coil) is telling the bike when to fire (adjusted by the ECU & CDI box etc. When the bike is running pulling the lanyard sends a ECU pin to ground telling it ignore the Pulser (trigger coil and does not send signal to the CDI box and high voltage coil. When the bikes running and in gear when you put too much load on the back wheel at low rpms it stalls the engine. When the bike stalls the AC trigger coil no longer ses a rotation AC pulse going in the ECU box so it kills the bike. This scenario can be the same on a 2T carbed trials bike. Too low an RPM in gear and a heavy sudden load can cause a mechanical stall of the bike as it does not see any AC voltage coming from the alternator and pulser trigger coil to the ECU unit. I still think it is weird logic Jimmyl is stating. I do agree stopping the bike I gear with the clutch is a bad thing to do but purely from a mechanical stress level. Edited February 10, 2022 by billyt Quote Link to comment Share on other sites More sharing options...
billyt Posted February 10, 2022 Report Share Posted February 10, 2022 Right off the Montesa manual. Pulser coil (Trigger coil) Quote Link to comment Share on other sites More sharing options...
jimmyl Posted February 10, 2022 Report Share Posted February 10, 2022 (edited) Just my experience of 12 yrs 4rt riding and chatting with others bike always starts better after being stopped with kill button/ lanyard than a mechanical stall Edited February 10, 2022 by jimmyl Quote Link to comment Share on other sites More sharing options...
billyt Posted February 10, 2022 Report Share Posted February 10, 2022 Same here Jimmy 42 years of riding only trials bikes. Several Montesa 4T Scorpa 4T Beta 4T and many Beta 2T trials bikes We all have our experiences and that is good overall for the sport that we share them 👍. 1 Quote Link to comment Share on other sites More sharing options...
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